Energy balance in disk and CO2 laser beam inert gas fusion cutting

Leonardo Daniele Scintilla; Luigi Tricarico; Andreas Wetzig; Eckhard Beyer

doi:10.1117/12.909941

6 February 2012 Energy balance in disk and CO₂ laser beam inert gas fusion cutting

Leonardo Daniele Scintilla, Luigi Tricarico, Andreas Wetzig, Eckhard Beyer

Proceedings Volume 8239, High Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications; 82390N (2012) https://doi.org/10.1117/12.909941
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

Experimental, numerical and analytical investigations were performed to give a possible explanation of the differences in cutting quality detected for inert gas laser beam cutting process performed with disk and CO₂ laser sources. Cutting experiments were carried out at maximum cutting speed on cold work steel test specimens with different sheet thicknesses. The particular feature of the applied experimental setup was the similar geometry of both the CO₂ and the disk laser beam with comparable values of the focus diameter and the Rayleigh length. The thermodynamic analysis was based on experimentally primary losses evaluation by means of polymethylmethacrylate (PMMA) blocks, on numerical computation of conductive power losses and analytical calculation of the remaining terms of energy balance. Energy balance allowed the evaluation of secondary losses and proportion of vaporized kerf volume used for justifying the lower quality of disk laser cuts. The lower proportion of vaporized kerf volume detected for disk laser cuts results in an increased process temperature, thus an increase of viscosity of molten material and the subsequent more difficult ejection of the melted material from the cut kerf.

Citation Download Citation

Leonardo Daniele Scintilla, Luigi Tricarico, Andreas Wetzig, and Eckhard Beyer "Energy balance in disk and CO₂ laser beam inert gas fusion cutting", Proc. SPIE 8239, High Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications, 82390N (6 February 2012); https://doi.org/10.1117/12.909941

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available